Evaluate the sum.
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Evaluate the sum. |
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Add the first five terms of the sequence an = n2 + 3n from Your Turn 1. |
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Solve |
Step |
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The first five terms are 4, 10, 18, 28, 40 |
n
= 1 means
start
at 1 5 means end at 5. |
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= 4 + 10 + 18 + 28 + 40 = 100 |